Cooling system of device special for welding of projection welding nut

Abstract

The invention provides a cooling system of a device special for welding of a projection welding nut. The cooling system comprises an upper electrode body cooling system and a lower electrode body cooling system, wherein the upper electrode body cooling system comprises an upper water inlet mechanism and an upper water outlet mechanism; the upper water inlet mechanism and the upper water outlet mechanism are connected with a hollow upper holding rod of an upper electrode body; the lower electrode body cooling system comprises a lower water inlet mechanism and a lower water outlet mechanism; and the lower water inlet mechanism and the lower water outlet mechanism are connected with a hollow lower holding rod of a lower electrode body. According to the cooling system, the water inlet / outlet mechanisms and direct pipelines are added in the electrode bodies, cold water can enter the electrode bodies through the water inlet / outlet mechanisms and the direct pipelines to cool the electrode bodies, water cooling cycle operation is carried out through the water inlet / outlet mechanisms and the direct pipelines, the cooling efficiency is improved, the welding process is stable and reliable, the continuous working time is effectively prolonged, the production efficiency is improved, the tooling maintenance cost is reduced, and the utilization cycle and service life of electrodes are prolonged.

Description

technical field [0001] The invention relates to the field of welding electrodes, in particular to a cooling system for a special welding device for projection welding nuts. Background technique [0002] In the field of auto parts manufacturing, a large number of parts have projection weld nuts. The projection welding nut process is to place the nut with bumps on the thin plate parts to be welded with it, and use the lower electrode to position it, and press it on the projection welding nut through the downward movement of the upper electrode, so as to realize the alignment between the bumps under the nut and the thin plate parts. The connection is soldered. [0003] In modern industrial welding technology, the projection welding process accounts for a large proportion. The projection welding process usually uses a high-density welding current to achieve the effect of metal melting and connection under the action of external force through the limited contact area between pa...

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a cooling system for a special device for projection welding nut welding, which solves the problem that the cooling system of the projection welding electrode in the prior art has poor cooling effect and long cooling time question

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